"Choir (coro) for Holy Week, by the brotherhood of the Oratorio di Santa Croce.
Four men. Technique of faislobordone based on the major triad and parallel isorhythmic parts for four voices (bassu, contra, bogi, falzittu). A plurimodal system with abrupt modulations. The timbre of each voice is especially chosen so that their harmonics combine and reinforce one another to produce a "fusional" voice, called the quintina, an octave above the bogi, as shown in the sonagram, figure 16.
For Holy Week, during the procession of Holy Monday.
Text in a Latin of oral tradition, recalling the principal moments of the Passion of Christ."